from the back cover:
The Realm of Shadows is a major new Call of Cthulhu campaign from the author of 'Walker in the Wastes'. Inside you'll find source material on ghouls, the Cult of the Charnel God, and the notorious Cultes des Goules, as well as four adventures that take investigators through Massachusetts, the Dreamlands, and the rainforests of French Guiana. Featuring extensive investigations, numerous player aids, and terrifying opponents.